South Plainfield, borough (1990 pop. 20,489), Middlesex co., NE N.J.; inc. 1926. It is the seat of several research and consulting firms and has plants that make chemicals, plastics, spices and flavorings, cosmetics, rubber products, pigments, electrical machinery, and structural steel.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.